Re: [PATCH v2] generic: test overwriting file with mmap on a full filesystem

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On 22.07.25 08:56, Christoph Hellwig wrote:
> I just noticed this test failing on zoned xfs in current for-next.
> 
> That's because for out of place overwrite file systems writing at
> ENOSPC will obviously fail, and I think the test acknowledges that
> by forcing nocow for btrfs.
> 
> But that leaves "real" out of place write file systems affected, which
> should also include zone btrfs, but the test actually fails there
> in mkfs already due to some reason.

It probably fails the _try_scratch_mkfs_sized() call because that goes 
into _check_minimal_fs_size() and that should _notrun if $fssize < 
$MIN_FSSIZE.

> Can you please rework the patch to see that setting the nocow flag
> works first and only try with that or something like that?
> 
> 





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